Controller-regulator.



No, 821,768. w1-"mmm MAY ze, 3,906.

- J. v; E: ffus.

GGNTBGLLEB, .',zammwma APPLIGATGN FILED APR. il, lSO.

...drs ma.

UNITED `sfrafrns PATENT OFFICE.

JOSEPH V.' E. TITUS, OF KEOKUK, IOWA, ASSIGNOR TO ELECTRICAL v, DEYIOESOOMPANY, OF KEOKUK, IOWA, CORPORATION.

CONTROLLER-REGULATOR.

Beit known that lI, JOSEPH V. E. TrrUs, a citizen ofthe United States, residing at Keokuk, in the county of Lee and State of Iowa, have invented new and useful'lmprovements in Controller-Regulators, of which the following is a full, clear, concise, and exact description, reference being had to the accomvpanying drawings, lforming a part of this specification.

My invention relates to improvements in that class of controller-regulators which are used onstreet-car controllers or in' analogousV relations for preventing the motorman from operating the controller to cut out the re-l y slsta'nce in the armature-circuit of the motor or motors too rapidly, to thereby prevent an excess pflow of current. and the attending Waste of energy, and to avoid injury to the 2O ap "aratus twhas for its object to provide means,

whereby in instances where the current is eut off and it is desired to turn the, cntroller Sametime jumping the wire'.

` motor will act as a generator, thereby retard.l

ing the movement of the car and stopping the same. In the present controllers, in which means are provided to prevent the too rapid v operation of the control er, this cannot be accomplished, due to the fact that when the controller is moved so slowly the motors will not beproperly connected, and it is one of the objects of this invention to provide means which Will when the current is for any reason cut oil' from the car automatically inove out oi operation the retarding device and vpermit the controller to be moved as rapidly as desired.

I have illustrated my invention in the accompanying drawings in connection with one form of controller-regulator; but it will be understood that my'invention is equally applicable to other forms. .',f The same reference characters indicate like parts throughout the several views.

Speccation of Letters Patent.

.Application filed April 11. 1904. Serial No. 202.618.

Patented May 29, 1906.

a regulator embodying my invention attached thereto. oted dog with its controller dash-pot. ig. 3 is a side elevation of the controller, part of the casing being cut away; and Fig. 4 is a diagrammatic view showing the circuit arrangement.

In this` one form of regulator in connection with which my invention is used the numeral 2 represents the usual casing of a street-car controller, 3 being the handle or crank of the s ame, lwhich is carried u on the upper end of theshaft 4 of the controll manner. The normal stop 6 is mounted upon the cover of the casing, against which the usual stop 7, carried upon the handle 3,

engages when the handle is in off position.

The usual marking-lugs are mounted upon the top of the casing, which indicate the amount of resistance cut out of the circuit as the handle is turned, and the ordinaryreversing and interlocking mechanism, as indicated at the right of Figi, all of which may be the usual or desired type and are not specifically described, as they form no ypart of the controller-regulator.

A wheel or disk 8 is secured to the controller-shaft 4 by set-screws 9, passing through its hub and engaging flattened portions on the shaft and is provided at its periphery with a zigzag channel, slot, or groove 10, having, preferably, the form shown, in which the Figure V1 is a plan view of a controller with er 5, all 1n the usual Fig. '2 is a side elevation' of the ivi portions 11 of the lower edge of the slot form l inclined cam-surfaces, up which the dog 12 slides as the wheel 8 is rotated in the opera tion of the handle 3, said cam-portion surfaces being connected by snbstantially vertical portions 13. zag slot has the stop or ratchet portions 14, against which the dog 12 strikes :in the rotation of the wheel 8, said stop portions being connected by the inclined parts i5, which limit the possible upward movement of said dog and confine it within the groover 10. These cam and stop surfaces occur at short intervals throughout portions of the periphery and at longer intervals at others, so that the proper movement of the controller may taire place'. Any arrangement, however, of these stops and inclined surfaces may occur so that the desired operation ofthe controller may be secured. y

The dog 12 is mounted to reciprocate in a The upper edge ofthe zig-.

IOO

said enlarvjement 1 o.

bore provided in an enlargement formed midway between the ends of the lever i6, pivoted at 17 to a casting4 18, forming a frame or support for the lever lland its cooperating parts and secured bysuitable screws or bol passing through apertures thereof to the flat face or wall o3 the casing if'. Apin in the rear end of the dog` l2 works in a slot in the end of and serves to prevent the rotation ot the dog, es well as to limit its outward movement.l f

The end of the dog has its upper and lower edgesbeveled to correspond somewhat to the slope of the inclined portions of the slot 10 in the wheel 8. The front ofthe dog is inclined slightly to agree with the stop ortions 14 of' the upper edge of the slot, whie are siibstantially normal to the inclined ortions of the slot, although they may be disposed at any desired angle, but preerablv at an angle less than the angle of friction. lhe stop portions 14 areplaced far enough backof the vertical portions ot' the lower edge to permit the dog to readily drop when the pressure is relieved. upon -the handle of the controller. When the controller-handle is turned, the do follows in the groove; sliding up the inc ined portions and it the movement of the handle 1s rapid striking against the stops 14, but droppin@ again as soon as the ressure is reom the handle 3, an( thus permittin the further rotation of the handle, wheel, an controller. y 4

The' dog 12 is rounded off at its reverse edge, so that when the handle is returned to its normal position and the wheel is reversely rotated the curved part will cause the dog to slide back out of' the groove 10, thus permitting aready and quick return ofthe handle to normal position. f

In'order that the action of the dog in its A vertical movement may be properly governed and made positive, a dash-pot is provided,

cylinder 19 for which .is formed at the outer end of the casting 18. A closely-fit ting piston 20 for the cylinder is providcd'with a transverse a rture 21, in wh1ch the rounded end V22- of t e dog-lever 16 projects. The piston 20 is furnished with a port or passage 23, which may be manually adjusted tolthc right size by ascrew 24, while a similar passage 25 and ascrew 2G are provided in thc walls of the cylinder. A flat-headed bolt 2.7 passes through an aperture in the wall of the piston and. is furnished with a spring 2S to maintain the aperture closed. This valve may be manually pevtated to permit thc ready manipulation o the piston.

A spring 29 is carried upona pin 3() of thc casing 18 and bears at its inner end against the flange of the casing and at its outer end against the enlargement of the lever 16, whereby downIwa-rd pressurel is exerted upon th e lever.

The parts thus far described iorm no part of my invention and are described for the purpose of showing how my inventionvmay be applied in practice.

.For normally holding the dog in operative position a magnet 3l is mounted upon the casting 18 and is secured in position by a cross-piece 32, held in engagement with the upper portion ot said magnet by a screw 33. The two cores oi the niagnet are secured together at their forward ends hy a cross-piece 34, secured to the cores of the magnet. The

armature member 35 of the magnet is mounted upon the opposite side thereof and loosel heldin position byscrews 36, passingthrouv openings therein and entering the cores oft e magnet. A downwardly-projecting arm 37, formed on the armature member, bears against the rear end ot the dog 12 and when the magnet is energized serves to normally force the dog forward into a position where it will engage the cams and stops as theycontroller is rotated.

`When the handle of the controller isrotated in the "on direction, the end .22 of the lever raises the piston of the d ashpot until the dog 12 strikes the stop 14 of the wheel. The'dog then instead of dropping at once is allowed to gradually descend b the retarded action of the dash-pot, where y the rate of operation of the controller-haudle may bc regulatedto any desired extent. piston in the cylinder may be regulated as Stated. The controller maybe returned to normal position without hi11d.rance,for the dog 12 merely rises over the top of the teeth or projections ou the periphery of the wheel. The strain upon thc dog is taken up by they casting and does not bind the dash-pot piston, in the lower 0nd of which the und ofthe lever 22 loosely rides.

ln Fig. 11 I have shown the arrangement of thc circuit for the magnet. 'lhe trolley 380i' the car engages the trollcy-wire 39 and is connected through thc controller 5 by conductor 4() with one terminal oi thc motor 41, the opposite terminalthcreol' being connected by conductor 42 with the `ground through the wheels 43 ot' the car. One terminal ofthe magnet 32 is connected, through a resistance 45, with the trolley 38 hy a branch conductor 46 and the opposite terminal ol' thc maguct is connected by conductor 4-7 with thc ground through the whccls 43. By this arrangement it will be secu that il' for any reason the trolley-pole becomes disengaged from the wire, thereby breaking the circuit, thc current through the magnet 82 is cut oil and thc same is dener gizcd, which releases the armature 35, and the dog l2, through the action of its spring, is moved out of the slot 1() and permits the c011- troller to be rapidly movcd in the on direction.

While l have shown and described one form of my apparatus, it will be understood that l do not wish to hc. limited to the details T he movement of the l IIS means arranged'to render it operative continuously while the operating-circuitis on, and means for rendermg said devlce lnoperative when the operating-circuit is broken to permit an unimpeded movement ofthefcontroller.

' 2. The combination with a controller-regu-Q,

, later, of electrically-controlled means -for rendering said regulatory operative continuously While the operating-current is turned on, means for rendering said regulator inoperative when the operating-current is eut off to permit an unim'peded movement ofthe controller. i

3. The combination With a controller, of a device for retarding the movement thereof in the on direction when the motor-circuit is made, iaid device includingmeans connected therewith which renders it operative independently of the strength of the eurrentin the motor-circuit.

4. The combination with a controller, of a device for retarding the movement thereof in the on direction when the motor-circuit is made, said dev ice including means connected therewith which renders it operative independently of the strength of the current in the motor-circuit, and means automatically rendering said device inoperative when the motor-circuit 1s broken.

5. In 'a controller-regulator, means controlled by a magnet for rendering said regulator operative continuouslywhile the operating-circuit is made to ermit an impeded e movement of the control er' in the on (li-i,

rection.

6. In a controller-regulator, means operated by a magnet connected in parallel with the motors for rendering said regulator oper- .ative continuously while the operating-circuit is made to permit an imped-edmovement of the controller in the ont;i direct-ion.

7. The combination with 'a controller, of a regulator therefor, means controlled by amagnet for rendering said regulator operative continuously while the operating-,circuit is made to ermit an impeded movement of the control er in the on direction, and means automatically rendering said regulator inoperative when the current to the motors is cut off.

?. 'llie combination with a co itreller, of a regulator therefor, means operated by a mag:

'net connected in parallel with the motors for rendering said regulator operative continuously While the'operating-eircuit is made to permit an impeded movement of theA con` troller in the lfon. direction, and means for automatically rendering said regulator inoperative when the current to the motors is cut oif.

9. The combination with a controller, o'f a 4regulator therefor, means controlled by a magnet for rendering said regulator operative continuously Whlle the operating-circuit is madeto ermit an impeded movement of the controler in the on direction, means automatically rendering said regulator inoperative when the current to the motors is eut off, and a suitable resistance for said magnet. 10. The combination with'a controller, of means independent of the strength of current for retarding the movement of said controller, and means for automatically rendering said retarding means inoperative when the current is cut off.

11. The combination with a controller, of means independent of the current for retarding the movement of said controllerand electrically-operated means for rendering said retarding means operative.

12. The combination with a controller, of means independent of the currentfor retarding the movement of said controller, and electrically-operated means for rendering said retarding means inoperative when the current is cut off.

13. The combination with a controller, of means independent of the current for retarding the movement thereof,electrically-operated means for maintaining said retarding means in operative` osition, and-means for rendering said retar ingmeans inoperative.

14. The combination with a controller, of means retarding the movement thereof, of electrically-operated means for maintaining saidretarding means 'in operative relation continuously during the passage of current through the motor, and means for rendering --lsald retarding means inoperative when cur- -rent is cut off from the motor.

15.` The combination with a controller, of meanI4 for retarding the movement of said controller, a magnet for maintaining said retard'ing means in operative relation continuously while the operating-circuit is made; and means for rendering said retarding means ino erative when the operating-circuit is `bro en.

16. The combination with a controller, of means for retarding the movement thereof, a magnet for maintaining said retarding means in operative relation, a' resistance for said roo magnet, and means for renderingr said retard- Aing means inoperativey when said magnet is denergized.

l 1,7. 'llie comlnnatlon with a controller, of

,names -regulating means to permit 0111 -an inte'znittent movement o# said contro lerin one-d- ;eotionfbut ak continuous .movement thereof' 1n a reverse dujeetron', 4 and e',leannually-oper-A 'one direction', and a continuous movement of said G'lvltrollerl in a lreverse drectionfeleetneaHy-operated means' for rendermg sald regulatlngf means operative eontmuously vwhlethe current is' onyand'means for automatically rendering said regulating means 'inl operative' Whenthe current is cutof.

wan opposite dieetion; .of a 'n llation eentnuouslywhile the regulating :mea 'jfmperatve amen the sa magnet is denergzed. K

120. Ina oontrollerregdato?, the eombinal. tion lwith'.operating means for said eontoller,

tion, and a eontinuc-us. zne'afeme thereof ia tai-ning said reg-Matin eutfisrmadej-and` means `for lef.

of a serles of stops, a movabe dog, and se, nes of cams toenove Sal-nog nto engagement *with said stops, and Veleetronmvgneto ,means for renderlng sind dog mopelfatlvs.

:In witness vwhereof-1i Ahave vhereunto sub 

